Improvement in permutation-locks



l W. KUCK.

y Permutation Lacks. N0. 145,191. Patentedfla n.6, 874.. 'l Je' n UNITEDSTATES PATENT OFFICE.

WILHELM'KOOK, OF CINCINNATI, OHIO.

IMPROVEMENT IN PERMUTATlON-LOCKS.

Specification forming` part of Letters Patent No. 146,191, dated January6, 1871i; application filed October 18, 1873.

To all 'whom it may concern:

Be it known that I, WILHELM Kock, of Cincinnati, in the, county ofHamilton and State of Ohio, have invented a new and ImprovedPermutation-Lock, of which the following is a specification:

In the accompanying drawing, Figure 1 represents afront elevation of myimproved permutationlock, showing dial-plate and knob; Fig. 2, avertical transverse section ofthe same. Figs. 3 and 4 are sectional rearelevations, 4showing the lock, respectively7 in closed and openposition; Figs. 5 and 6, detail front and side elevations of thetumblers, showing their setting mechanism. Fig. 7 is a detail sectionalview of the pendulum-lever, showing manner of releasing the pivotedfencelever; and Fig.

` 8 is a side view of the cylindrical bolt with recessed face-disk, intowhich the safe-bolt passes for opening the door.

Similar letters of reference indicate corresponding parts.

The invention will rst be fully described, and then pointed out in theclaims.

\ In the drawing, A represents the case of the permutationlock, which isapplied inthe usual manner to the safe, vault, or other door. It isprovided with a knob, B, and face dial-plate, which is marked withletters, numerals, or other signs, and turns on a washer-plate, B', withthe index-marks for operating the tumblers which are set thereon. Thespindle C of the dial-plate B passes through the outer faceplate of thesafe-door, and turns freely in a tube, a, to which the iianged bushingsb are keyed. rlhe tumblers D turn freely on bushings b, the hanged partthereof keeping them at the required distance from cach other. Eachtumbler D is made of three concentric ringsan inner ring, (1, whichturns in a wider outer one, d1, and is retained therein by the third topring, d?. The top ring d2 isV applied to the outer ring d1 by twoscrews, e, which are placed near together at one side thereof, so thatthe other side acts like a band-sprin g on the lower rings. A pin, c1,is applied to the inner side of top spring-ring d2, so as to fit intothe perforations e2 of inner ring d, which are arranged along thecircumference of the same. The inner ring d is furthermore supplied witha projecting pin or tooth, f, which slides in a circular groove of theadj onin g tumbler, formed by top ring d2 and innerring d, and acts 'ona pivoted tongue, f'. The tongue f' is applied, by means of ascrew-pivot, into a recess of the shoulder ofthe inner ring d on thatside opposite to pin f, and only allowed to swing far enough to eitherside that the pin f of the next tumbler D assumes a position radial andcentral to the pivoted part of tongue f', whether acting thereon fromthe right or left side. The pins j' of tumblers D are in the same axiswhen all are brought to act on the tongues f' of the adjoining tumblers.Each tumbler is provided at its circumference with a dovetailed recess,

h, between screws e, and is also provided, diametrically opposite to it,in the buter ring dl, with a recess, h', into which the wedge-shapedtooth El of lever E enters, so as to lift the top ring d? and disconnectthe perforated inner ring d, for adjustment-to the letters selected forthe combination. Lever E has as many teeth El as there aretumblers inthe lock,land is pivoted to a standard, F, cast to case A, and operatedby a pivoted knob, E2, the stem of which slides in a slot, i, of thecase A, and is firmly secured in said slot t' by a projecting lug, i',when not in use. The revolving driving-wheel Gr is `rigidly screwed tothe end of spindle O by topmwasher-plate l1 and screw '12.

Wheel G is also `provided with a pin, f, which y acts in similar manneron the first tumbler D -as the other tumblers on each other. Acircumferential groove, m,`in wheel G serves to admit a small anchor-shaped pendulum, a, pivoted to the end of lever H in such a mannerthat it does not come in contact with the inner circumference of groovem.

the extension-arm ofboltlever L, whose central ringshaped part turns ona shoulder, p, of wheel Gr, while its opposite arm engages, by a slotteddownward extension, L', the guidepin q of bolt M. shape, and carries, atright angles to it, the

tapering fence I', which enters the dovetailed recesses hl of tumblersD. Its fore part slides Two cross-pins, Y n', Fig. 7 (of which one is arear extension` of Thelever I is of curved easily on check-lug o, whileits lioolnshaped projection 0^ passes along the circumference of wheelG, and enters the recess r of the saine, when fence I enters thetumbler-recesses h, and check-lug o releases its end. The wheel G, andwith it boltllever L, is then carried forward and bolt vM turned. Bolt Mturns in standard F, and with its disk-shaped face M in a circularopening of the side plate of case A. A recess, s, for the main bolt ofthe safe door, extends from the face-disk into the solid part thereof,and allows the entering of the door-bolt when the lock is in openposition. The exact position and motion of the tacerecesses s aredefined by the slotted extension L', which slides on the upper surfaceof stand ard F.

For opening the lock, the dial-knob is turned in one direction till thepin of driving-wheel engages the tongue of the rst tumbler, the pin ofthefirst tumbler the tongue of the sec ond, and so on until all thetumblers are in motion. The dial-plate is then set with the first letterselected to the index-mark, carried thence in opposite direction to thesecond letter, and so on alternately in opposite directions till thetumblers are in position for ad inittin g the fence of the fence-lever.The driving-wheel is then set so that the pendulum rests upon thecross-pins; then lifting, by a return motion of the knob, thependulum-lever and releasing the fence-lever, which engages mais! thedriving-wheel and rotates thc bolt-lever and bolt, bringing the recessof the face-disk into position to receive the bolt of the safedoor.

The lock may be set to any combination of letters on the dial-plate byplacing the tumblers into their position, as described, by using,instead of the index-mark, which is vertically above the dial-plate, theside niark, which brings `the recesses of the tumblers under thespring-rings in position for the action of the wedge-lever, and allowsthe entering of the wedge-teeth' and the changing of the tumblers to anydesired combination of letters. The wedge-lever is then withdrawn andthe lock opened on the index-mark.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. rlhe combination of the revolving drivingwheel Gwith the pendulum-lever H n and fence-lever I, to release the same foracting on the bolt-lever at the required time, substantially in themanner described.

2. The driving-wheel G, having groove m, cross-pins n', and recess it',for throwing up the pendulumdever and engaging the fence-lever,

as described.

WILHELM KOCK. Vitnesses:

L. GLATZ, FERD. GoLDsoHMiD.

